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3e-531AP Wireless Access Point
Glossary
tion hosts. Typically, the DMZ contains web servers, FTP servers, SMTP (email) servers,
and DNS servers.
NAT (Network Address Translation)
an Internet standard that enables a local-area network (LAN) to use one set of IP addresses
for internal traffic and a second set of addresses for external traffic.
NMS (Network Management Station)
Includes such management software as HP Openview and IBM Netview.
PCMCIA
Short for Personal Computer Memory Card International Association, and pronounced
as separate letters, PCMCIA is an organization consisting of some 500 companies that has
developed a standard for small, credit card-sized devices, called PC Cards. Originally
designed for adding memory to portable computers, the PCMCIA standard has been
expanded several times and is now suitable for many types of devices.
PC Card
A computer device packaged in a small card about the size of a credit card and con-
forming to the PCMCIA standard.
PDA (Personal Digital Assistant)
A handheld device.
SNMP
Simple Network Management Protocol
SSID
A Network ID unique to a network. Only clients and access points that share the same
SSID are able to communicate with each other. This string is case-sensitive. Wireless LANs
offer several security options, but increasing the security also means increasing the time
spent managing the system. Encryption is the key. The biggest threat is from intruders
coming into the LAN. You set a seven-digit alphanumeric security code, called an SSID, in
each wireless device and they thereafter operate as a group.
VPN (Virtual Private Network)
A VPN uses encryption and other security mechanisms to ensure that only authorized us-
ers can access the network and that the data cannot be intercepted.
WLAN (Wireless Local Area Network)
A type of local-area network that uses high-frequency radio waves rather than wires to
communicate between nodes.
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